Gas-producer



(No Model.)

J. HENDERSON.

GAS PRODUCER.

No. 320,873. Patented June 23,1885.

N. PEICHS Pfmtruthogmphun wzlllinghm, D.C.

NTTE STATES PATENT GAS-PRODUCER.

SPECIFICATION forming part of Letters Patent No. 320,873, dated June 23, 1885.

Application filed July 19, 1883.

To all whom it may concern.-

Be it known that I, J AMES HENDERSON, of Bellefonte, Centre county, Pennsylvania, have invented certain new and useful Improvements in GasProducers, of which the following is such full, clear, and exact description as will enable others skilled in the art to make and use the same, when taken in connection with the accompanying drawings, in which- Figure l is a vertical. section through the gas-producer, showing the retort in front view. Fig. 2 is a transverse section at the lower portion of fuel-retort on line 00 0c of Fig. 1.

This my in\ ention consists in supply ing the lower portion of the retort A with a facing of refractory material, or with a water-coil in combination therewith, as hereinafter more fully set forth and specified.

In gas-producers there is usually a fuel-retort, A, in which the fuel is placed through the opening B at the top, and filled, the lower portion of the fuel resting on the hearth D of the producer. The lower edge, a, of this retort A is of smaller diameter than the fuelchamber of the gasprodncer at the point where it is situate, so that an annular space is left between the lower edge, a, of the retort and the producer for the gas to pass through into the gaschamber E, and escape by the flue F to the point of its combustion or use.

Heretofore and before this my invention it has been found difficult to make a retort to withstand, at its lower portion, the intense heat of the gases to which it is subjected, as iron is burned out and fire-brick and other refractory material is liable to become broken by the poking of the fuel and otherhard usage to which it is subjected, so that it becomes de sirable to have the combination of the iron skirt-retort with a thin outer covering of firebrick or other-suitable refractory material,the iron skirt or retort (which is open at the bottom) to be used as a support to the refractory material, and the refractory material to protect the iron skirt from the heated gases, and thereby increase its durability.

(No model.)

In carrying out this my invention I place on the lower portion of the retort or fuel-magazine a coil, G, of wrought-iron pipe encircling the same, to which coil there is supplied a stream of cold water, entering the pipe at g and leaving it at g, circulating through the coil G,whereby the coil and the hopper in contact with which it is are kept cool and from being burned by the heat. In the drawings, the coil G is shown cast in the lower port-ion of the retort, which is made of cast-iron for that purpose, and above the castiron rim H are secured refractory bricks I. The retort may,

however, be made of boiler-iron or cast-iron throughout,surrounded by the coil G,as shown,

and covered with refractory material, as fireclay, to protect it from the heat of the direct flame. The refractory material and cast iron may, however, be omitted from about the coil, or the coil may be omitted and the refractory material may be covered over the retort or hopper at its lower portion, so as to protect the hopper from the intense heat of the gases which pass outside of the hopper.

The refractory material may be made to adhere to the hopper by being plastered or cemented thereon, or may be made into brick and riveted or cemented to it.

What I claim, and desire to secure by Letters Patent, is-

l. The combination, substantially as before set forth, of the gas-producer with an iron fuelretort having an outer covering of refractory material.

2. The combination, substantially as before set forth, of the gas-producer with aniron fuelretort, having a cooling-chamber at the lower portion thereof, water-supply pipe connected therewith, and an outer covering of refractory material.

JAMES nrnnnnson.

Witnesses:

G. G. FRELINGHUYSEN, J OSEPH J. SULLIVAN. 

